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Setting Limits on Supersymmetry Using Simplified Models
07:46

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Published on: November 15, 2013

QCD resummation for single spin asymmetries.

Zhong-Bo Kang1, Bo-Wen Xiao, Feng Yuan

  • 1RIKEN/BNL Research Center, Building 510A, Brookhaven National Laboratory, Upton, New York 11973, USA.

Physical Review Letters
|November 24, 2011
PubMed
Summary
This summary is machine-generated.

We calculated single spin asymmetries in Drell-Yan and deep inelastic scattering processes. Our findings provide a framework for understanding these phenomena using Quantum Chromodynamics (QCD) resummation formalisms.

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Area of Science:

  • High Energy Physics
  • Quantum Chromodynamics (QCD)
  • Particle Physics

Background:

  • Single spin asymmetries in high-energy particle collisions provide crucial insights into the spin structure of hadrons.
  • Understanding these asymmetries requires advanced theoretical frameworks that account for complex interactions and quantum effects.

Purpose of the Study:

  • To investigate the transverse momentum dependent factorization for single spin asymmetries in Drell-Yan and semi-inclusive deep inelastic scattering processes.
  • To calculate the next-to-leading order hard factors within the Ji-Ma-Yuan factorization scheme.
  • To derive QCD resummation formalisms for these observables.

Main Methods:

  • Utilizing the Ji-Ma-Yuan factorization scheme for calculating hard factors.
  • Applying the Collins-Soper-Sterman method for deriving QCD resummation formalisms.
  • Expressing results in terms of collinear correlation functions and Sudakov form factors.

Main Results:

  • The next-to-leading order hard factors were calculated.
  • QCD resummation formalisms were derived, incorporating all-order soft-gluon effects.
  • Scheme-independent coefficients were computed up to one-loop order.

Conclusions:

  • The study provides a comprehensive framework for analyzing single spin asymmetries in relevant particle physics processes.
  • The derived formalisms and calculated coefficients are essential for precise theoretical predictions and experimental comparisons.
  • This work advances the understanding of hadron spin structure within the realm of perturbative QCD.